Wrench.



G. COTTON.

WRENCH.

APPLICATION FILED SEPT. 10, 1912. 1,069,858 v Patented Aug.12,1913. e ff 26 l@ F I A /yvl B E I' ZI I9 Z3' Charles Cozon. WMM/woon.;-

UNTTFB STATES PATENT FFTQE,

CHARLES COTTON, OE BURKETT, NEBRASKA.

WRENCH.

Application led September 10, 1912.

To all whom t may concern.'

Be itknown that I, CHARLES COTTON, a citizen of the United States of America, residing at Burkett, in the county of Hall and State of Nebraska, have invented new and useful Improvements in Jrenches, of which the following is a specification.

This invention relates toy improvements in wrenches and has particular application to ratchet wrenches.

Tn carrying out the present invention, it is my purpose to provide a wrench of this type which shall include a work engaging member adapted to be adjusted to the work, and an operating member for the work engaging member, the former being detachably associated with the latter and provided with a handle.

The invention will first be described and then pointed out in the claim.

Tn the accompanying drawing forming a part of this specification; Figure 1 is a side elevation of a wrench constructed in accordance with the present invention. Fig. 2 is a similar view of the work engaging member showing the jaws in open position. Fig. 3 is a longitudinal sectional view of the operating member', and Fig. 4 is a similar View taken at right angles to Fig. 3.

Similar reference characters designate like parts throughout the several views.

Referring to the accompanying drawing in detail wherein has been illustrated the preferred embodiment of the invention, the wrench in the present instance includes a work engaging member A and an operating member B detachable from the work engaging member, both of the members being constructed of any suitable or preferred material.

The work engaging member as shown consists of a shank 1 provided upon one end with a pin 2 and carrying at its opposite end a jaw 3 preferably formed integral with the shank and which will be hereinafter termed the stationary jaw. At a suitable point in its length, the stationary jaw 3 is provided with a threaded opening 4 arranged in a cut away portion 5 of the said jaw and designed to receive one end of a threaded stud 6. Upon the opposite sides of the opening 4, the stationary jaw carries a lurality of guide pins 7, 7 which are preferably fixed to the stationary jaw and proj ect from the relatively inner face thereof.

The numeral 8 indicates the movable jaw Specification of Letters Patent.

atented Aug. 12,1913.

Serial No. 719,587.

having a threaded opening 9 arranged in alinement with the opening 4 of the stationary j aw and designed to receive the opposite end of the threaded stud 6 which end is threaded in a direction reverse to that of the first end of the stud so that in the movement of the stud 6, the movable jaw may be moved toward or away from the stationary jaw to adjust the work engaging member to the work. The stud 6 intermediate its length is equipped with a knurled thumb nut 1() to facilitate the rotation of the studv within the openings of the jaws whereby the jaws may be moved toward or away from each other, the jaw 8 being provided with a cut out portion 11 arranged in a plane coincident with the cut out portion 5 of the aw 3 so that in the closed position of the jaws, the inner faces of the same may snugly engage each other. At opposite sides of the opening 9, the jaw S is formed with .transverse apertures 12, 12 for the purpose of receiving the guide pins 7, 7 so that the jaw 8 in its movement relatively to the jaw 3 may be held in operative position. Thus, it will be seen that, in the operation of the thumb nut 10, the jaw S will be moved toward and away from the jaw 3, in accordance with the direct-ion of rotation of the thumb nut, so that the work engaging member may be adjusted to the work and clamped thereto, it of course being understood that the work engaging member is designed to lie in a plane coincident with the plane of the work.

The operating member B embodies a stock composed of spaced parallel plates 13 interconnected at one end and held in spaced relation through the medium of a blo'ck 14 formed with a longitudinal threaded aperture designed to receive a threaded stem 15 of an operating handle 16. The opposite ends of the plates 13 are provided with alining openings 17 adapted to receive the pin 2 of the shank 1 so that the operating member may be securely fastened to the work engaging member to permit the rotation of the latter. This operating member carries a ratchet mechanism composed of a ratchet wheel 13 mounted intermediate the plates 13 and adapted to be keyed or otherwise suitably secured to the pin 2 of the shank 1 of the work engaging member to insure rotation of the latter. To rotate the ratchet wheel and to reverse the direction of rotation thereof, a pair of oppositely disposed dogs 19 and 20 are pivotally mounted within the plates l13 and each has a toothed end 21 adapted to engage the ratchet 18 to impart movement thereto. Itigidly secured to the block 14 and projecting Within the plates 13, is a stem 22 carrying at its free end oppositely disposed pins 23 encircling Which are helical expansion springs 211 designed to engage shoulders 25 of the vdogs 2O so that the dogs Will normally engage the ratchet Wheel.

In order to permit the operation of either one of the dogs and render the other inoperative so that a rotary movement may be imparted to the Work engaging member, the operating member is equipped With a shifting' device operable to render either one of che dogs inoperative at `will. This shifting deviceconsists of a strip 26 of metal 0r other material best adapted for the purpose, pivoted intermediate, its ends to one of the plates 13 as at 27 7and arranged transversely thereof. The opposite ends of the strip 26 exteriorly of the plates 18, are provided With manipulating members 28 formed With laterally projecting lugs`29 designed to engage the shoulders 25 whereby in the movement of the shifting device, either one of the dogs may be rendered inoperative and consequently move out of engagement with the ratchet Wheel 18 and against the action of its spring 24 so that the other of the dogs may be permitted to operate and rotate the Work engaging member as is obvious.

From the foregoing description, taken in connection with the accompanying drawing, the advantages of the construction and of the method of operation Will be readily apparent to those skilled in the art to Which the invention appertains, and While I have described the principle of operation of the Patent is A Wrench comprising a Work engaging member and an operating member detachably associated With said first member7 said operating member including a pair of plates spaced apart, a blocl interconnecting said plates at one end of the member and holding `the saine in spaced relation, a ratchet Wheel Vdisposed between said plates and adapted to receive said work engaging member, a pair of dogs pivotally mounted intermediate of said plates, a stem having one end rigidly ksecured to said block and extending inwardly of said plates and provided at its free end With oppositely disposed pins, springs encircling said pins and engaging said dogs to hold the latter in engagement With said ratchet Wheel, and a shifting device pivotally secured to one of said plates and adapted to move either one of the dogs out. of engagement With the ratchet Wheel whereby in the operation of the Wrench the direction of rotation thereof may be reversed.

In testimony whereof I aiiix my signature in presence of tivo Witnesses.

CHARLES COTTON. lVitnesses II. S. CRAIG, J. vW. BosY.

Copies of this patent may be obtained for lfive cents each, by addressing the Commissioner of Patents, Washington, D. C. 

